Geo-tomographic Observation of Inner-structure of Volcano with Cosmic-ray Muons.

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  • NAGAMINE Kanetada
    Meson Science Labotatory, Faculty of Sciene, University of Tokyo Muon Science Laboratoriy, Institute of Physical and Chemical Research (RIKEN)

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  • 宇宙線ミュオンを用いた火山体トモグラフィ
  • ウチュウセン ミュオン オ モチイタ カザンタイ トモグラフィ

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Abstract

One potential use of cosmic-ray muons arriving nearly horizontally along the earth is a probe of the inner-structure of a gigantic geophysical substane, such as a volcanic mountain. A simple detection system comprising a plastic scintillator hodoscope which is expandable to a larger scale was developed. The first successful measurements of the inner-structure of Mt. Tsukuba as well as Mt. Asama are described. The natural extension towards tomographic measurement is considered. The future perspective of the application of the present method towards the prediction of volcanic eruption is discussed.

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